Related Concept Videos
01:20Asthma: Pathogenesis and Management
Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
01:17Other Pulmonary Disorders
Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
01:29Asthma-I: Introduction
Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
01:26Asthma-II: Pathophysiology and Classification
Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
01:24Asthma-III: Symptoms and Complications
Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Classification of Asthma
01:28Asthma I: Introduction
Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
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Related Experiment Video
Updated: Jun 16, 2026
08:05
Murine Model of Allergen Induced Asthma
Published on: May 14, 2012
Bugs and asthma: a different disease?
Dawn C Newcomb1, R Stokes Peebles
1Department of Medicine, Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical School, Nashville, Tennessee 37232-2650, USA.
Proceedings of the American Thoracic Society
|April 24, 2009
Summary
Asthma exacerbations are increasingly common, often triggered by viral infections like rhinoviruses (RVs) and atypical bacteria. Understanding the immune response to these infections is key to managing asthma.
Area of Science:
- Immunology
- Infectious Diseases
- Respiratory Medicine
Background:
- Asthma prevalence has risen significantly, with exacerbations driving healthcare costs.
- Viral and atypical bacterial infections are primary triggers for asthma exacerbations.
- Early-life infections (rhinoviruses, RSV, hMPV) and atypical bacteria (Mycoplasma, Chlamydia) are linked to asthma development and exacerbations.
Purpose of the Study:
- To review recent advancements in understanding viral and atypical bacterial causes of asthma exacerbations.
- To highlight new data on host immune responses in airway epithelial cells.
- To discuss findings from animal models of infection.
Main Methods:
- Literature review of recent developments in viral and atypical bacterial infections.
- Analysis of host immune response data in airway epithelial cells.
- Examination of findings from animal models.
Main Results:
- Rhinoviruses (RVs) are the most frequently identified viruses post-exacerbation.
- Respiratory Syncytial Virus (RSV) and human metapneumovirus (hMPV) infections in early life are associated with asthma development.
- Mycoplasma pneumoniae and Chlamydia pneumoniae infections are linked to chronic asthma and exacerbations.
Conclusions:
- Viral and atypical bacterial infections are critical factors in asthma exacerbations.
- Further research into host immune responses and animal models is crucial for developing new therapeutic strategies.
- Understanding these triggers can lead to better asthma management and prevention.